<template>
    <transition name="slide-up">
        <div class="setting-wrapper" v-show="menuVisible && settingVisible===0">
            <div class="setting-font-size">
                <div class="preview" :style="{fontSize: fontSizeList[0].fontSize + 'px'}">A</div>
                <div class="select">
                    <div class="select-wrapper" v-for="(item, index) in fontSizeList" :key="index"
                         @click="setFontSize(item.fontSize)">
                        <div class="line"></div>
                        <div class="point-wrapper">
                            <div class="point" v-show="defaultFontSize === item.fontSize">
                                <div class="small-point"></div>
                            </div>
                        </div>
                        <div class="line"></div>
                    </div>
                </div>
                <div class="preview" :style="{fontSize: fontSizeList[fontSizeList.length - 1].fontSize + 'px'}">A</div>
            </div>
            <div class="setting-font-family" @click="showFontFamilyPopup">
                <div class="setting-font-family-text-wrapper">
                    <span class="setting-font-family-text">{{defaultFontFamily}}</span>
                </div>
                <div class="setting-font-family-icon-wrapper">
                    <span class="icon-forward"></span>
                </div>
            </div>
        </div>
    </transition>
</template>

<script>
  import { FONT_SIZE_LIST } from '../../utils/book'
  import { ebookMixin } from '../../utils/mixin'
  import { saveFontSize } from '../../utils/localStorage'

  export default {
    mixins: [ebookMixin],
    name: 'EbookSettingFont',
    data () {
      return {
        fontSizeList: FONT_SIZE_LIST
      }
    },
    methods: {
      setFontSize (fontSize) {
        this.setDefaultFontSize(fontSize)
        // 本地保存字号大小
        saveFontSize(this.fileName, fontSize)
        this.currentBook.rendition.themes.fontSize(fontSize)
      },
      showFontFamilyPopup () {
        this.setFontFamilyVisible(true)
      }
    }

  }
</script>

<style scoped lang="scss">
    @import "../../assets/styles/global";

    .setting-wrapper {
        position: absolute;
        bottom: px2rem(48);
        left: 0;
        z-index: 200;
        display: flex;
        flex-direction: column;
        width: 100%;
        height: px2rem(90);
        background: white;
        box-shadow: 0 px2rem(-8) px2rem(8) rgba(0, 0, 0, .15);

        .setting-font-size {
            flex: 2;
            display: flex;
            height: 100%;

            .preview {
                flex: 0 0 px2rem(40);
                @include center;
            }

            .select {
                display: flex;
                flex: 1;

                .select-wrapper {
                    flex: 1;
                    display: flex;
                    align-items: center;

                    &:first-child {
                        .line {
                            &:first-child {
                                border-top: none;
                            }
                        }
                    }

                    &:last-child {
                        .line {
                            &:last-child {
                                border-top: none;
                            }
                        }
                    }

                    .line {
                        flex: 1;
                        height: 0;
                        border-top: px2rem(1) solid #ccc;
                    }

                    .point-wrapper {
                        position: relative;
                        flex: 0 0 0;
                        width: 0;
                        height: px2rem(7);
                        border-left: px2rem(1) solid #ccc;

                        .point {
                            position: absolute;
                            top: px2rem(-8);
                            left: px2rem(-10);
                            width: px2rem(20);
                            height: px2rem(20);
                            border-radius: 50%;
                            background: white;
                            border: px2rem(1) solid #ccc;
                            box-shadow: 0 px2rem(4) px2rem(4) rgba(0, 0, 0, .15);
                            @include center;

                            .small-point {
                                width: px2rem(5);
                                height: px2rem(5);
                                background: black;
                                border-radius: 50%;
                            }
                        }
                    }
                }
            }
        }

        .setting-font-family {
            flex: 1;
            font-size: px2rem(14);
            @include center;

            .setting-font-family-text-wrapper {
                @include center;

            }

            .setting-font-family-icon-wrapper {
                @include center;

            }
        }

    }

</style>
